This bill aims to revise the laws governing utility lines and facilities in Montana by allowing the Public Service Commission to grant public utilities a Certificate of Public Convenience and Necessity for the construction of electric transmission facilities. It establishes optional ratemaking procedures and timelines, provides rulemaking authority, and includes definitions relevant to the legislation. The bill emphasizes the importance of advanced transmission technology, which enhances capacity, efficiency, and reliability while reducing wildfire risks. It also seeks to expedite necessary upgrades to the transmission infrastructure to meet the growing demand for power.

Key provisions include the requirement for public utilities to request a certificate before commencing construction on transmission facilities rated above 69 kilovolts, with the commission required to make a determination within 300 days. The bill also introduces advanced cost approval processes for transmission lines and related facilities, ensuring that utilities can secure presumption of prudence for costs incurred if they align with approved amounts. Additionally, the bill clarifies that the commission's approval does not alter existing requirements or guarantee cost recovery for utilities. The act is set to take effect immediately upon passage and approval.